dtls.h File Reference

DTLS sock definitions. More...

Detailed Description

DTLS sock definitions.

Author

Aiman Ismail muham.nosp@m.mada.nosp@m.imanb.nosp@m.in.i.nosp@m.smail.nosp@m.@haw.nosp@m.-hamb.nosp@m.urg..nosp@m.de

Martine Lenders m.len.nosp@m.ders.nosp@m.@fu-b.nosp@m.erli.nosp@m.n.de

Raul A. Fuentes Samaniego raul..nosp@m.fuen.nosp@m.tes-s.nosp@m.aman.nosp@m.iego@.nosp@m.inri.nosp@m.a.fr

Daniele Lacamera danie.nosp@m.le@w.nosp@m.olfss.nosp@m.l.co.nosp@m.m

Ken Bannister kb2ma.nosp@m.@run.nosp@m.box.c.nosp@m.om

Leandro Lanzieri leand.nosp@m.ro.l.nosp@m.anzie.nosp@m.ri@h.nosp@m.aw-ha.nosp@m.mbur.nosp@m.g.de

Definition in file dtls.h.

#include <assert.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/types.h>
#include "net/sock.h"
#include "net/sock/udp.h"
#include "net/credman.h"

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Macros
#define	CONFIG_DTLS_HANDSHAKE_BUFSIZE_EXP   8
	Default buffer size for DTLS handshake (as exponent of 2^n) More...
#define	DTLS_HANDSHAKE_BUFSIZE   (1 << CONFIG_DTLS_HANDSHAKE_BUFSIZE_EXP)
	Size buffer used in handshake to hold credentials.
#define	SOCK_DTLS_HANDSHAKE   (EXDEV)
	Return value for a successful handshake.
#define	CONFIG_DTLS_FORCE_EXTENDED_MASTER_SECRET   1
	Force extended master secret extension.
#define	CONFIG_DTLS_FORCE_RENEGOTIATION_INFO   1
	Force renegotiation info extension.

Typedefs
typedef struct sock_dtls	sock_dtls_t
	Type for a DTLS sock object. More...
typedef struct sock_dtls_session	sock_dtls_session_t
	Information about a created session.
typedef sock_udp_aux_rx_t	sock_dtls_aux_rx_t
	Auxiliary data provided when receiving using an DTLS sock object. More...
typedef sock_udp_aux_tx_t	sock_dtls_aux_tx_t
	Auxiliary data provided when sending using an DTLS sock object. More...

Functions
void	sock_dtls_init (void)
	Called exactly once during auto_init. More...
int	sock_dtls_create (sock_dtls_t *sock, sock_udp_t *udp_sock, credman_tag_t tag, unsigned version, unsigned role)
	Creates a new DTLS sock object. More...
sock_udp_t *	sock_dtls_get_udp_sock (sock_dtls_t *sock)
	Get underlying UDP sock. More...
int	sock_dtls_session_init (sock_dtls_t *sock, const sock_udp_ep_t *ep, sock_dtls_session_t *remote)
	Initialize session handshake. More...
void	sock_dtls_session_destroy (sock_dtls_t *sock, sock_dtls_session_t *remote)
	Destroys an existing DTLS session. More...
void	sock_dtls_session_get_udp_ep (const sock_dtls_session_t *session, sock_udp_ep_t *ep)
	Get the remote UDP endpoint from a session. More...
void	sock_dtls_session_set_udp_ep (sock_dtls_session_t *session, const sock_udp_ep_t *ep)
	Set the remote UDP endpoint from a session. More...
ssize_t	sock_dtls_recv_aux (sock_dtls_t *sock, sock_dtls_session_t *remote, void *data, size_t maxlen, uint32_t timeout, sock_dtls_aux_rx_t *aux)
	Receive handshake messages and application data from remote peer. More...
static ssize_t	sock_dtls_recv (sock_dtls_t *sock, sock_dtls_session_t *remote, void *data, size_t maxlen, uint32_t timeout)
	Receive handshake messages and application data from remote peer. More...
ssize_t	sock_dtls_recv_buf_aux (sock_dtls_t *sock, sock_dtls_session_t *remote, void **data, void **buf_ctx, uint32_t timeout, sock_dtls_aux_rx_t *aux)
	Decrypts and provides stack-internal buffer space containing a message from a remote peer. More...
static ssize_t	sock_dtls_recv_buf (sock_dtls_t *sock, sock_dtls_session_t *remote, void **data, void **buf_ctx, uint32_t timeout)
	Decrypts and provides stack-internal buffer space containing a message from a remote peer. More...
ssize_t	sock_dtls_sendv_aux (sock_dtls_t *sock, sock_dtls_session_t *remote, const iolist_t *snips, uint32_t timeout, sock_dtls_aux_tx_t *aux)
	Encrypts and sends a message to a remote peer with non-continuous payload. More...
static ssize_t	sock_dtls_send_aux (sock_dtls_t *sock, sock_dtls_session_t *remote, const void *data, size_t len, uint32_t timeout, sock_dtls_aux_tx_t *aux)
	Encrypts and sends a message to a remote peer. More...
static ssize_t	sock_dtls_send (sock_dtls_t *sock, sock_dtls_session_t *remote, const void *data, size_t len, uint32_t timeout)
	Encrypts and sends a message to a remote peer. More...
static ssize_t	sock_dtls_sendv (sock_dtls_t *sock, sock_dtls_session_t *remote, const iolist_t *snips, uint32_t timeout)
	Encrypts and sends a message to a remote peer with non-continuous payload. More...
void	sock_dtls_close (sock_dtls_t *sock)
	Closes a DTLS sock. More...
enum	{ SOCK_DTLS_1_0 = 1 , SOCK_DTLS_1_2 = 2 , SOCK_DTLS_1_3 = 3 }
	DTLS version number . More...
enum	{ SOCK_DTLS_CLIENT = 1 , SOCK_DTLS_SERVER = 2 }
	DTLS role . More...